Combination air chuck and nozzle



Jan. 1941- 1. B. KUBlLIUNAS 2,229,213

COMBINATION AIR CHUCK AND NOZZLE Filed Feb. '7, 1938 1526 .1. 73 21 if20 of a chuck memberl2.

Patented Jan. 21, 1941' COMBINATION AIR. CHUCK AND NOZZLE Ignas B.Knbiliunas, Boston, Mass.

Application February 7, 1938, Serial No. 189,178

4 Claims.

This invention relates to improvements in air chucks of the type used indelivering compressed air or other gases from a supply source. Itsobjects are to provide a simple, cheap, easily operated and efficientmeans of delivering compressed gases; to combine with an air chuck, ofthe character generally employed in filling stations and the like forinflating pneumatic tires, means for releasing air from the chuckindependently of the normal air chuck valve releasing means; to effectsuch releasing action either with or without nozzle means forconstricting the path of the gas; also to provide separate nozzleimprovements for an air chuck; and generally to effect a strong durablestructure which is protected, in any position it may assume, fromaccidental operation of the valve releasing means- The inventionconsists in means and combinations suitable for accomplishing theforegoing objects, as explained in the following specification andincludes not only the specific embodiments so described but allsubstantial equivalents thereof within the scope of the appended claims.

In the accompanying drawing:

Fig. 1 is a symmetrical central cross section of my improved air chuck;

Fig. 2 is a view similar to Fig. 1 and illustrates the valve means in anopen position;

Fig. 3 is a detailed view of a nozzle member;

Fig. 4 is a cross section taken on the line l4 of Fig. 1.

Fig. 5 is a diagrammatic view illustrating positions taken by the airchuck when not in use;

Fig. 6 is a view in side elevation showing a modification of air nozzlefor a. chuck;

Fig. 7 is a front elevation of the nozzle and spring assembly shown inFig. 6 with the spring partly cut away; and I Fig. 8 is a cross sectiontaken on the longitudinal axis of the nozzle member illustrated in Fig.6.

Referring more in detail to the drawing, It! indicates a pipe means fordelivering a compressed gas such as air therethrough and is threaded atH to engage with a similarly threaded portion The bushing I5 is recessedat its inner side to receive a valve seat I 6 and secure it against thehousing l2. The valve seat It loosely supports a valve member H at itsunder side and an opening l9 of an even further reduced diameterreceives therethrough an extended valve portion [8 while the valveitself is maintained loosely adjacent the seat and is preventedfrom,falling away beyond a deflnite'ppint. The opening I! connects with acylindrical chamber 20 in housing I 2 to comprise a passageway forrelease of compressed gas. When gas is delivered under pressure from thepipe ID, the valve l1 becomes engaged against the seat It and ismaintained by the pressure. However, it no pressure is being deliveredthe 5 valve may drop away from the seat to only a limited extent sinceby the construction of the opening I! there results an annular shoulderportion in the housing I2 against which the valve must rest. The chuck[2 has been designed with an enlarged body portion as shown in Figs. 1'and 2 at one end of which is slidably received a plunger 2! having itspath of movement intersecting the line of projection of the valve stemportion iii. A head 22 is fixed to the plunger 2! and air pressuremaintains the plunger 2| firmly against the gasket 23. It will be notedthat valve l1 and chuck face l3 may operate at any time in theconventional manner of being applied over the valve stem of a tire.However, by depressing the head 22, plunger 2| angularly contacts memberl1, tending to tip it into a position such as that shown in Fig. 2,which breaks the seal between the plunger and the gasket l6, therebypermitting air to pass through the opening It in th chuck face.

It will noted that portion l8 has been formed with a ball 24 andconstricted neck 25. While not limited to such a construction, I mayprefer to utilize this or some similar means for providing easier andmore positive tipping action of the portion 18 by the plunger 2|. Whenthe mechanism is in the position "shown in Fig. 2, air is releasedthrough the chuck independently of the conventional method of depressingthe valve I! from the outside. For some purposes, such a releasing meansmay be satisfactory and greatly desirable, but it"may also be desired tosupply the air through a nozzle such as 26 iilustrated in Fig. 3 whichis of conventional form and construction, having'its tip comprising astraight cylindrical passageway 21.

When such a nozzle member is desired, I may associate it with themechanism already described by eiiecting threads 28 on the nozzle 5member and by forming similarly sized threads 29 on the inside ofbushing I5. Such association of the nozzle member with the face of thechuck has been indicated in broken lines in Fig.

1. I may also desire to employ, as well as a conventional valve, a valvedesign such as that shown in Figs. 1 and 4, in which the outer edge ofthe valve I 1 may be scalloped as indicated at 30, or otherwiseserrated, so that should only a slight tipping of the portion it occur.somewhat 5:

applying nozzle means such as that used on spray guns in which liquid isintroduced through the side of the nozzle in the well known manner. and

not considered necessary to be illustrated and described in connectionwith the present air chuck illustration. The operation of the valve withthe head 22 has been facilitated by so arranging the head that thelength of tubing and conductor such as it is firmly grasped in the handand the head 22 readily falls into a position adapted to be operated bythe downward pressure of the thumb, which provides a better leverage. Atthe same time the head is preferably constructed of a size such that itextends beyond the chuck body only a slight distance. This is desirablefor the reason that in use, less likelihood of accidental release ordepressing of the head and plunger will occur, and to further thiseffect the chuck I 2 has been formed with a concaved area around thatportion through which the head projects.

It is pointed out that air chucks in general, whether used in garages,filling stations, or machine shops, are usually subjected to rough usageand must be sufiiciently durable to withstand pressure of heavy objectsand be adapted to falling into various positions without release of thevalve. In connection therewith, I have formed the chuck body in somewhatof an elbow shape and placed the plunger in such manner that no matterwhat position the chuck may be thrown into, it will not come to rest onthe head 22 and thereby release or open the valve I'I. Fig. 5 moreclearly illustrates the protected arrangement of the plunger head 22 invarious positions of the tool. The full line position shows the chuckface down, and the broken line position shows the chuck face up.

With this construction, a strong, durable and simply operated andadjusted air chuck is provided which may be operated in three ways: (a)as a normal chuck for a tire valve; (b) as a source of supplying air inwhich the valve is released from the inside without a nozzle; and (e) asa source of supplying air with a nozzle. Either one of the latter twooperations may be useful in air blasting for various purposes as incleaning, drying,- and the like.

Figs. 6 to 8 inclusive relate to a modified form of nozzle and releasingmeans for an air chuck 3i of the conventional order. 32 indicates a mi;-zle member which may be of any desirable shape as for instance the formshown in cross section in Fig. 8. The nozzle may be received on somesupporting means as for instance the flat spring 33 shown partly cutaway in Fig. 7, and the opening in the nozzle 32 is continued throughthe flat spring .33 by means of a tubular extension 32a, which mayeither be a separate element or formed as a part of the nozzle as shownin Fig. 8.

The spring member33 may be resiliently assoagainst by some suitablemeans as a wing nut 30 and bolt 81.

The flat spring 33 will preferably be bent in' a manner such as thatillustrated in Fig. 8 so that the nozzle member 32 and the tubularportion 12a are maintained away from the face of the chuck 8| and thetubular portion is out of contact with the chuck valve. However, whenthe spring 23 is pressed against the face ot.. the chuck, the tubularmember enters into the conventional opening therein, thereby opening thevalve and permitting air to pass out through the nozzle 22, with thetubular member 22a acting as a conducting member as well as opening thevalve.

A practical and eiilcient means for increasing the field of use of airchucks of the type used in nlling stations is provided by theconstruction shown, and an eiilcient and easily mounted nozzle means isassociated with such a chuck by only one adjustment. Also, the valveopening portion of the nozzle and its tubular portion 32a is extremelypositive and may be operated by depressing the spring or by pressing thenozzle directly against the work as for instance a tube to be blown out.

Having thus described my invention, what I claim is: a

1. An improved air chuck for an air hose comprising in combination ahousing having a chamber, a face for contacting a tire valve and a chuckvalve in said face adapted to be opened by contact with said tire valve,said chuck valve having its inner extremity extending angularly intosaid chamber and formed with a rounded end, said chamber housingcomprising an extended portion in which is slidably received a plungermember normally engaged against the chamber by gas pressure therein andadapted to be urged against the said rounded end of the valve stem in anangular direction to gradually open the valve.

2. An. improved air chuck for an air hose comprising in combination ahousing having a chambered portion with an inlet thereto and an annularhollow body angularly connecting with the body to present an outlettherefrom. said annular body portion formed with a flat face in which isreceived a valve, said chambered body portion being extended to receiveexternally operated plunger means for operating the valve means, theplunger means being so located that when compressed by the thumb of theoperator its direction of movement will be at right angles to the gripof the operator on the housing whereby improved leverage and control ofthe plunger action is attained. l

3. An improved gas chuck for a tire valve comprising in combination ahousing having an inlet and outlet thereto, a valve seat insaid outlet,a valve located in said housing and adapted to be engaged against saidseat by gas pressure, a supporting portion in the housing formaintaining the valve loosely adjacent the said valve seat in theabsence of pressure, stems located at either side of said valve, one ofsaid stems extending through the said supporting portion, and externallyoperated piston plunger means in the housing adapted to tilt the saidextending stem and open the valve thereby.

4. An improved gas chuck for use with tire valves comprising incombination a housing having an inlet and outlet thereto, a valve seatlocated in said outlet, a valve received in the housing and adapted tobe engaged against said valve seat from within the housing by gaspressure, a supporting portion in the housing for maintaining the valveloosely adjacent the said valve seat in the absence of pressure, a stemformed on said valve extending through the said supporting portion, saidhousing having a cylindrical opening formed therein, a piston plungerslidably engaged in the cylindrical opening adapted to tilt the saidstem and open the valve from within the housing thereby, and saidplunger being arranged relative to the said stem such that upon tiltingthe stem the plunger is partly engaged in the cylindrical opening tosubstantially 5 I prevent passage of airthrough the opening.

IGNAS B, KUBILIUNAS.

